music from series like LOZ that appear in new games in the series. It feels so nostalgic -u-
the music from Shin Megami Tensei4 is quite nice to listen to while you're reading.
In Animal Crossing it's KK Aria, Imperial KK, and Marine Song 2001 (also nostalgic),
Skyrim has epic music too.
most music from FF except 13. every battle in FF 13 had only 2 songs so I got pretty sick of it quickly.
Shadow of the Colossus has beautiful music too :D
That's all I could think of atm.

Can I say the Gta;5 soundtrack and there 500 songs? lol I really licked the Sleeping dogs one 2 because a good soundtrack isn't just full of my favorite songs but full of songs that I get to hear for the first time and end up finding new artists to listen to :3

I've been really getting into the GTA V soundtrack but mostly the In-house stuff. I also really liked all the Halo soundtracks(Halo 4's music is just so F-ing awesome), I liked The Mario Galaxies (as well as other mario games) and Asura's Wrath had an amazing soundtrack (even if some of it wasn't original works).